Loading ...
Loading ...
Loading ...
OPERATING TIPS
• Check chain tension before first use and
after 1 minute of operation. See CHAIN
TENSION in the ASSEMBLY section.
• Out wood only. Do not cut metal, plastics,
masonry, non-wood building materials, etc.
• Stop the saw if the chain strikes a foreign
object, inspect the saw and repair or re-
place parts as necessary.
• Keep the chain out of dirt end sand. Even a
small amount of dirt wilt quickly dull a chain
and thus increase the possibility of kickback.
• Practice cutting a few small logs using the
following techniques to get the "feel" of us-
ing your saw before you begin a major
sawing operation.
• Squeeze the throttle trigger and allow the
engine to reach full speed before cutting.
• Begin cutting with the sew frame
against the log.
• Keep the engine at full speed the entire
time you are cutting.
• Allowthechaintocutforyou. Exertonly
light downward pressure. If you force
the cut, damage to the bar, chain, or en-
gine can result.
• Release the throttle trigger as soon as
the cut is completed, allowing the en-
gine to idle. If you run the sew at full
throttle without a cutting load, unneces-
sary wear can occur to the chain, bar,
and engine. It is recommended that
the engine not be operated for lon-
ger than 30 seconds at full throttle.
• To avoid losing control when cut is com-
plete, do not put pressure on saw at end
of cut.
• Stop the engine before setting the saw
down after cutting.
TREE FELLING TECHNIQUES
_, WAR NIN G: Check for broken or dead
branches which can fell while cutting causing
serious injury. Do not cut near buildings or
electrical wires if you do not know the direction
of tree fail, nor cut at night since you will not be
aIe to see well, nor during bad weather such as
rain, snow, or strong winds, etc. if the tree
makes contact with any utility line, the utility
company should be notified immediately.
• Carefully plan your sawing operation in ad-
vance.
• Cleartheworkarea. You needacieararee
all around the tree so you can have secure
footing.
• The chain sew operator should keep on
the uphill side of the terrain as the tree is
likely to roll or slide downhill after it is felled.
• Study the natural conditions that can cause
the tree to fall in a particular direction.
Natural conditions that can cause a tree to
fall in a particular direction include:
• The wind direction and speed.
• The lean of the tree. The lean of a tree
might not be apparent due to uneven or
sloping terrain. Use a plumb or level to de-
termine the direction of tree lean.
• Weight and branches on one side.
• Surrounding trees and obstacles.
Look for decay and rot. If thetrunk is rotted,
it can snap and fall toward the operator.
Check for broken or dead branches which
can fal_ on you while cutting.
Make sure there is enough room for the tree to
fail. Maintain a distance of 2-1/2 tree lengths
from the nearest person or other objects. En-
gine noise can drown out a warning call.
Remove dirt, stones, loose bark, nails, sta-
ples, and wire from the tree where cuts are to
be made.
Plan a clear retreat path to the rear and diag-
onal to the line of fail.
_ Plan a clear retreat path
(}*"_ - Direction of Fall
45 ° / ,_
FELLING LARGE TREES
(6 inches (15 ore) in diameter or larger)
The notch method is used to fell large trees.
A notch is cut on the side of the tree in the de-
sired direction of fall. After a felling cut is
made on the opposite side of tree, the tree
will tend to fall into the notch.
NOTE: If the tree has large buttress roots,
remove them before making the notch. If us-
ing saw to remove buttress roots, keep saw
chain from contacting ground to prevent dull-
ing of the chain.
NOTCH CUT AND FELLING THE
TREE
• Make notch cut by cutting the top of the
notch first. Out through 1/3 of the diameter
of the tree. Next complete the notch by cut-
ting the bottom of the notch. See illustra-
tion. Once the notch is cut remove the
notch of wood from the tree.
Final (felling) cut here, 2 inches
(5 cm) above center of notch.
First cut } 2'; I /
I/
_ _.f .._,ff _ -'_:_
• After removing the wood from the notch,
make the felling cut on the opposite side of
the notch. This is done by making e cut about
two inches (5 cm) higher than the center of
the notch. This will leave enough uncut wood
between the felling cut and the notch to form
a hinge. This hinge will help prevent the tree
from falling in the wrong direction.
11
Loading ...
Loading ...
Loading ...